package com.ruoyi.im.mapper;

import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.ruoyi.im.domain.Group;
import org.apache.ibatis.annotations.Param;

import java.util.List;

public interface GroupMapper extends BaseMapper<Group> {

    Long groupExist(@Param("userId") Long userId,
                           @Param("customer") Long customer,
                           @Param("instructor") Long instructor);
}
